jump-out
n.— «Since May, undercover officers have targeted street-level dealers, buying packets of crack at a street corner, then moving in with vehicles full of police who “jump out” and make arrests. First conducted in Florida, the “jump-outs” have drawn mixed reviews from other agencies that have duplicated them.» —“Police pursue ‘crack’ dealers into the streets” by Jon Jeter Star-Tribune (Minneapolis-St. Paul, Minn.) July 14, 1989. (source: Double-Tongued Dictionary)